High temperatures and humidity will combine on Monday to create dangerous heat. With highs possibly reaching into the mid-90s and dewpoints well into the 70s much of the Stateline could be dealing with heat indexs above 100 degrees. However, thunderstorms will likely break out in Wisconsin and if they spread into the Stateline, the increased cloudiness will stop the mercury from rising too high. So hope for rain, but prepare for the worst. When the temperature gets this high be sure to drink plenty of water and do your best to stay out of the heat.